Table 1.

Characteristics of women admitted for treatment of hyperemesis gravidarum at Haukeland University Hospital 2002–2019, n = 1,064

	Mean (SD)
Age (years)	28.6 (5.2)
Pre-pregnancy BMI (kg/m2)a	24.5 (4.7)
Weight change at first admission (% of pre-pregnancy weight)	-5.8 (4.4)
Gestational length at first admission (days)c	66 (19)
	Median (IQR)
Gravidityd	2 (1; 3)
Paritye	1 (0; 1)
Previous pregnancies with hyperemesisf	1 (1; 2)
Number of hospitalizations	1 (1; 2)
Total number of days in hospitalg	2 (1; 5)
Total number of antiemetics pre-hospitalh	1 (1; 2)
Total number of antiemetics while hospitalizedi	2 (1; 3)
	n (%)
Readmitted once or more	341 (32)
Termination of pregnancy	61 (5.7)

Abbreviations: n number, SD standard deviation, IQR interquartile range, BMI body mass index

^an = 19 missing values

^bn = 16 missing values

^cn = 2 missing values

^dn = 4 missing values

^en = 1 missing value

^fn = 320 (30%) had previous pregnancies with HG

^gNumber of days hospitalized, including readmissions

^hn = 532 (50%) using antiemetics prior to first hospitalization for hyperemesis

ⁱn = 1,016 (95%) using antiemetics during hospital stay, including readmissions